IF you have an aircraft with a GLAP assembly that uses these parts, this includes earlier Beech Aircraft, Beech G18 & H18 models, Cessna 310 & 320, and Commander 112 & 114 Aircraft. Please indicate your model number and serial number so we can tag the parts appropriately, and get you the correct parts, otherwise you will get an FAA-PMA approval for those models listed above.

For Other thickness windows, please contact us and we can get you the correct length barrel nuts..